Originally Posted by
harrell
just received a box 0f 1000 remington no.6 1/2 small rifle primers.
this new box has a warning on it that the last box i purchased did not have.warning: do not use in 17 rem,222 rem,223rem. does anyone know why this warning was added to the new primers? thanks for any information.
The 17 rem, 204 ruger, 222, 223 all need the thickest/toughest primer because of the very high pressures involved in small rifles. Theses same rifles in semiauto/AR-15 configs are even at greater risk of Slam-Fires caused by the floating firing pin. The proper primers were specially designed by Rem are the
7 1/2's.
These are thicker and resist firing pin punctures and slam-fire ignitions.
You may be able to get by with(6 1/2's) bolt action rifles and moderate hand loads, but I wouldn't do it.